They have made several attempts on that already but couldnt bring out anything substantial from it, that is why bitcoin have been having edge over any governemnt policiy or regulation because it is not centralized.

This is something which we can by our own self view and see from google because lots of informations were made available there concerning countries where bitcoin in not being permitted for use or seen as a legalized means of making payment, but with all these, the people still remain with their decision for embracing bitcoin because it satisfies them on what they wanted to have from handling their finances, this calls for more adoption on others who are willing to see the impact of bitcoin and will be glad they are also part of it train on a decentralized financial economy.